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Psychological Terms — Amyotrophic Lateral Sclerosis (ALS)
Amyotrophic lateral sclerosis (ALS) is a severe, progressive motor neuron disease that typically begins in middle adulthood and is marked by rapid degeneration of neurons controlling voluntary muscle movement. Early symptoms often include weakness, twitching, and muscle atrophy in the hands, arms, or legs, gradually progressing to nearly all skeletal muscles. Over time, affected individuals develop difficulties with speech (dysarthria), swallowing (dysphagia), and eventually respiration, which is the primary cause of fatality. Average survival after diagnosis is approximately five years, though progression may vary.
The disease involves deterioration of both upper and lower motor neurons, leading to the loss of neural input to muscles and subsequent wasting. Cognitive functioning is usually preserved, though a subset of patients develop related frontotemporal dementia. ALS shares features with other neurodegenerative conditions but is distinguished by its primary impact on motor pathways.
Known colloquially as Lou Gehrig’s disease in North America, ALS has been the focus of extensive research into genetic and environmental causes. Although no cure exists, supportive care—including ventilation assistance, speech therapy, and medications to slow symptom progression—can improve quality of life.
Notably, the etymology derives from Greek: a- (“without”), myo- (“muscle”), trophic (“nourishment”), reflecting the disease’s hallmark of muscle wasting.
Amyotrophic lateral sclerosis (ALS) is a severe, progressive motor neuron disease that typically begins in middle adulthood and is marked by rapid degeneration of neurons controlling voluntary muscle movement. Early symptoms often include weakness, twitching, and muscle atrophy in the hands, arms, or legs, gradually progressing to nearly all skeletal muscles. Over time, affected individuals develop difficulties with speech (dysarthria), swallowing (dysphagia), and eventually respiration, which is the primary cause of fatality. Average survival after diagnosis is approximately five years, though progression may vary.
The disease involves deterioration of both upper and lower motor neurons, leading to the loss of neural input to muscles and subsequent wasting. Cognitive functioning is usually preserved, though a subset of patients develop related frontotemporal dementia. ALS shares features with other neurodegenerative conditions but is distinguished by its primary impact on motor pathways.
Known colloquially as Lou Gehrig’s disease in North America, ALS has been the focus of extensive research into genetic and environmental causes. Although no cure exists, supportive care—including ventilation assistance, speech therapy, and medications to slow symptom progression—can improve quality of life.
Notably, the etymology derives from Greek: a- (“without”), myo- (“muscle”), trophic (“nourishment”), reflecting the disease’s hallmark of muscle wasting.
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